Question Number 90508 by frc2crc last updated on 24/Apr/20
$$\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\left(\frac{\mathrm{1}}{{n}^{{m}} \left(\mathrm{1}+{n}\right)^{{m}} }\right) \\ $$$${what}\:{is}\:{the}\:{general}\:{for}\:{this}\:{sum} \\ $$